Fire-proof building



Nrrnn STATES PATENT Crimen.

CHARLES AIKIN, OF EVANSTON, ILLINOIS.

FIRE-PROOF BUILDING.

SPECIFICATION forming part of Letters Patent No. 477,733, dated June 28, 1892.

Application filed August 20, 1891. Serial No. 403,260. (No model.)

To all whom it 11mg concern:

Be it known that I, CHARLES AIKIN, a citizen of the United States, residing at Evanston, in the county of Cook and State of Illinois, have invented new and useful forms for protecting from fire the wooden members of brick or stone buildings, of which the following is a specification.

My invention relates to lfire-proof casings or coverings for wooden members of buildings, as shown in the accompanying drawings, in which- Figure l is a perspective View of a doorjoist with one of my sections thereon. Fig. 2 1s a like View of the section. Figs. 3 and 4L are similar views of bridging-plates. Fig. 5

shows the manner of union of the sections and plates.

Similar letters refer to similar partsth roughout the several views.

A is a covering or casing formed of terracotta or other earthen or 1ire-proof material, slipped over the joist D in sections, asshown in Fig. l. After all the joists have been covered in this manner the member C of similar material which forms the floor is laid on and between the members A, as shown in Fig. 5. The ceiling is formed by placing in position the member B. (Shown in detail in Fig. 3

and shown in combination with the casings, Fig. 5.)

The roof is formed in like manner to the floor. Preferably theceiling-pieces B are placed in position in advance of the floorpieces C E. Fig. 2 shows the passage for the wooden member through the easing A.

lVha-t I claim as my invention, and desire t0 secure by Letters Patent, is-

1. Fire-proof casings or coverings for wooden members of buildings, so formed as to be threaded in series upon such wooden members, and thereby protect them from fire, the casings being formed with shoulders or projections, so as to serve as a support for the ceiling members, all substantially as set forth.

2. The combination, with a fire-proof casing for wooden members of buildings, constructed and arranged thereon as described, of plates C, adapted to rest upon said sections and bridge the space between the said inclosing members, all substantially as set forth.

8. The combination, with the fire-proof casing for wooden members of buildings, arranged thercon as described and provided with shoulders near their lower faces, of plates B, adapted to rest Vupon said shoulders and bridge the space between, all substantially as set forth.

CHARLES AIKIN.

Vitnesses:

E. B. WITWER, K. F. BRISTOL. 

